This is a complicated and often confusing subject. I've read about it several times and still got things wrong. This book worked for me.

It starts with theory, then practice, then recommendations. In each part, it deals with AC electrical safety grounds, lightning grounds, and RF "grounds". Dealing with RF fields is as much about bonding the local equipment grounds as it is about a single ground point. In some sense, it is about having your equipment not be antennas, or at least all be part of the same antenna with the same RF voltages.

Anyway, an essential book for both safety and better operation of your transmitters and recievers. ( )